The area of the experimental plot occupied by wheat is 1200 km ^ 2. From every 100 m ^ 2 of this site, 48 kg of grain were harvested.

The area of the experimental plot occupied by wheat is 1200 km ^ 2. From every 100 m ^ 2 of this site, 48 kg of grain were harvested. How many kilograms of grain have been harvested from this entire site?

Let’s determine how many parts, 100 m² each, a land plot has, the total area of which is 1200 km². 1 km² = 1,000,000 m², therefore 100 m² = 0.0001 km².
1200: 0.0001 = 12000000 pieces.
Since 48 kg of grain are harvested from 100 m², they will receive from the entire field:
12,000,000 * 48 = 576,000,000 kg of cereal or 576,000 tons.